Gelastic seizures true true SNOMEDCT_US:89525009 HP:0010821 A type of seizure characterized by laughing or an outburst of laughing as a major feature. human_phenotype 2010-07-10T03:27:12Z http://www.case.edu/EpSO.owl#GelasticSeizure MSH:D004828 peter Laughter is usually lasts briefly, about 30s. Laughing can also be a component of several other kinds of seizures such as partial seizures with motor symptoms, myoclonic seizures, axial tonic seizures, flexor spasms, generalized convulsive seizures, and petit mal absences. Bursts of laughter or giggling, usually without appropriate related emotion of happiness, and described as mirthless. This seizure type is characteristic of seizures arising in the hypothalamus (see hypothalamic hamartoma), but can occur in seizures arising in the frontal or temporal lobes. UMLS:C0270820 https://www.epilepsy.com/learn/types-seizures/gelastic-and-dacrystic-seizures focal emotional seizure with laughing (gelastic) Focal emotional seizure